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14
Dec 6, 2012
12/12
by
Plenert, Gerhard Johannes
texts
eye 14
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Includes bibliographical references (p. 373-420) and index
Topics: Strategic planning, Organizational change, Industrial management, Competition, International
5
5.0
Dec 18, 2019
12/19
by
Plenert, Gerhard Johannes
texts
eye 5
favorite 0
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xiv, 184 pages : 24 cm
Topics: USA, Industrial management, Comparative management, Competition, International, Industrial...
20 cm
Topics: Voyageurs suédois -- Laponie -- 17e siècle, Voyageurs suédois -- Suède -- 17e siècle
Source: Bibliothèque Sainte-Geneviève, Ms. 4SC1695NOR
426 p. : (grav. et cartes) ; 25 cm
Topics: Voyageurs suédois -- Laponie -- 17e siècle, Voyageurs suédois -- Suède -- 17e siècle
Source: Bibliothèque Sainte-Geneviève, Ms. 4SC1734NOR
Available at the Bibliothèque interuniversitaire de santé (Paris). See this resource in Medica digital library : 05879x04 .
Topic: Traditions hippocratique et galénique
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31
Dec 5, 2018
12/18
by
Müller, Martin (Johannes Gerhard Martin), 1885-
texts
eye 31
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63 pages ; 23 cm
Topics: Intestinal Neoplasms, Sarcoma
2
2.0
Jun 29, 2018
06/18
by
Johannes Küber; F. Schmaltz; Gerhard Birkl
texts
eye 2
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We present the experimental implementation of double Bragg diffraction of Bose-Einstein condensates (BECs) as proposed in [E. Giese, A. Roura, G. Tackmann, E. M. Rasel, and W. P. Schleich, Phys. Rev. A \textbf{88}, 053608 (2013)]. We excite Rabi oscillations between the three coupled momentum states $\left| 0 \hbar k \right\rangle$ and $\left| \pm 2 \hbar k \right\rangle$. By selecting appropriate interaction times we generate highly efficient beamsplitters and mirrors for Bose-Einstein...
Topics: Quantum Physics, Condensed Matter, Quantum Gases
Source: http://arxiv.org/abs/1603.08826
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25
Sep 22, 2013
09/13
by
Johannes Hartung; Jan Steinhoff; Gerhard Schäfer
texts
eye 25
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The next-to-next-to-leading order post-Newtonian spin-orbit and spin(1)-spin(2) Hamiltonians for binary compact objects in general relativity are derived. The Arnowitt-Deser-Misner canonical formalism and its generalization to spinning compact objects in general relativity are presented and a fully reduced matter-only Hamiltonian is obtained. Several simplifications using integrations by parts are discussed. Approximate solutions to the constraints and evolution equations of motion are...
Source: http://arxiv.org/abs/1302.6723v2
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41
Sep 23, 2013
09/13
by
Johannes Hartung; Jan Steinhoff; Gerhard Schäfer
texts
eye 41
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Recently we derived the next-to-next-to-leading order post-Newtonian Hamiltonians at spin-orbit and spin(1)-spin(2) level for a binary system of compact objects. In this talk the derivation of them will be shortly outlined at an introductory level. We will also discuss some checks of our (complicated and long) results in the first part of the talk. In the second part we will show how to apply our results to the calculation of the last stable circular orbit of such a binary system of black holes...
Source: http://arxiv.org/abs/1303.0666v1
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34
Sep 20, 2013
09/13
by
Manuel Tessmer; Johannes Hartung; Gerhard Schäfer
texts
eye 34
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In this article the quasi-Keplerian parameterisation for the case that spins and orbital angular momentum in a compact binary system are aligned or anti-aligned with the orbital angular momentum vector is extended to 3PN point-mass, next-to-next-to-leading order spin-orbit, next-to-next-to-leading order spin(1)-spin(2), and next-to-leading order spin-squared dynamics in the conservative regime. In a further step, we use the expressions for the radiative multipole moments with spin to leading...
Source: http://arxiv.org/abs/1207.6961v1
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95
Sep 17, 2013
09/13
by
Manuel Tessmer; Johannes Hartung; Gerhard Schaefer
texts
eye 95
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A quasi-Keplerian parameterisation for the solutions of second post-Newtonian (PN) accurate equations of motion for spinning compact binaries is obtained including leading order spin-spin and next-to-leading order spin-orbit interactions. Rotational deformation of the compact objects is incorporated. For arbitrary mass ratios the spin orientations are taken to be parallel or anti-parallel to the orbital angular momentum vector. The emitted gravitational wave forms are given in analytic form up...
Source: http://arxiv.org/abs/1003.2735v4
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78
Sep 22, 2013
09/13
by
Gerhard Groessing; Johannes Mesa Pascasio; Herbert Schwabl
texts
eye 78
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In the context of our recently developed emergent quantum mechanics, and, in particular, based on an assumed sub-quantum thermodynamics, the necessity of energy quantization as originally postulated by Max Planck is explained by means of purely classical physics. Moreover, under the same premises, also the energy spectrum of the quantum mechanical harmonic oscillator is derived. Essentially, Planck's constant h is shown to be indicative of a particle's "zitterbewegung" and thus of a...
Source: http://arxiv.org/abs/0812.3561v4
2
2.0
Jun 30, 2018
06/18
by
Johannes Albrecht; Conor Fitzpatrick; Vladimir Gligorov; Gerhard Raven
texts
eye 2
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The LHCb experiment will operate at a luminosity of $2\times10^{33}$ cm$^{-2}$s$^{-1}$ during LHC Run 3. At this rate the present readout and hardware Level-0 trigger become a limitation, especially for fully hadronic final states. In order to maintain a high signal efficiency the upgraded LHCb detector will deploy two novel concepts: a triggerless readout and a full software trigger.
Topics: Physics, High Energy Physics - Experiment, Instrumentation and Detectors
Source: http://arxiv.org/abs/1410.5012
836
836
Feb 12, 2007
02/07
by
Mencke, Gerhard Hermann, praeses; Dumbstorff, Johannes Nicolaus, respondent
texts
eye 836
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Diss.-- Leipzig, 1711 (J. N. Dumbstorff, respondent)
Topics: Noahides, Noahide Laws
3
3.0
Jun 30, 2018
06/18
by
Johannes Hofmann; Georg Hager; Gerhard Wellein; Dietmar Fey
texts
eye 3
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This paper presents a survey of architectural features among four generations of Intel server processors (Sandy Bridge, Ivy Bridge, Haswell, and Broad- well) with a focus on performance with floating point workloads. Starting on the core level and going down the memory hierarchy we cover instruction throughput for floating-point instructions, L1 cache, address generation capabilities, core clock speed and its limitations, L2 and L3 cache bandwidth and latency, the impact of Cluster on Die (CoD)...
Topics: Computing Research Repository, Performance
Source: http://arxiv.org/abs/1702.07554
5
5.0
Jun 30, 2018
06/18
by
Johannes Hofmann; Jan Treibig; Georg Hager; Gerhard Wellein
texts
eye 5
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Single Instruction, Multiple Data (SIMD) vectorization is a major driver of performance in current architectures, and is mandatory for achieving good performance with codes that are limited by instruction throughput. We investigate the efficiency of different SIMD-vectorized implementations of the RabbitCT benchmark. RabbitCT performs 3D image reconstruction by back projection, a vital operation in computed tomography applications. The underlying algorithm is a challenge for vectorization...
Topics: Distributed, Parallel, and Cluster Computing, Performance, Computing Research Repository
Source: http://arxiv.org/abs/1401.7494
4
4.0
Jun 30, 2018
06/18
by
Johannes Hofmann; Jan Treibig; Georg Hager; Gerhard Wellein
texts
eye 4
favorite 0
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We examine the Xeon Phi, which is based on Intel's Many Integrated Cores architecture, for its suitability to run the FDK algorithm--the most commonly used algorithm to perform the 3D image reconstruction in cone-beam computed tomography. We study the challenges of efficiently parallelizing the application and means to enable sensible data sharing between threads despite the lack of a shared last level cache. Apart from parallelization, SIMD vectorization is critical for good performance on the...
Topics: Distributed, Parallel, and Cluster Computing, Performance, Computing Research Repository, Computer...
Source: http://arxiv.org/abs/1401.3615
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32
Sep 23, 2013
09/13
by
Thomas Lauber; Johannes Kueber; Oliver Wille; Gerhard Birkl
texts
eye 32
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We present an optimized strategy for the production of tightly confined Bose-Einstein condensates (BEC) of 87Rb in a crossed dipole trap with direct loading from a magneto-optical trap. The dipole trap is created with light of a multifrequency fiber laser with a center wavelength of 1070nm. Evaporative cooling is performed by ramping down the laser power only. A comparison of the resulting atom number in an almost pure BEC to the initial atom number and the value for the gain in phase space...
Source: http://arxiv.org/abs/1110.5192v1
3
3.0
Jun 30, 2018
06/18
by
Taraka Rama; Johannes Wahle; Pavel Sofroniev; Gerhard Jäger
texts
eye 3
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In this paper we explore the use of unsupervised methods for detecting cognates in multilingual word lists. We use online EM to train sound segment similarity weights for computing similarity between two words. We tested our online systems on geographically spread sixteen different language groups of the world and show that the Online PMI system (Pointwise Mutual Information) outperforms a HMM based system and two linguistically motivated systems: LexStat and ALINE. Our results suggest that a...
Topics: Computing Research Repository, Computation and Language
Source: http://arxiv.org/abs/1702.04938
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31
Sep 20, 2013
09/13
by
Herbert Schwabl; Johannes Mesa Pascasio; Siegfried Fussy; Gerhard Groessing
texts
eye 31
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In our bouncer-walker model a quantum is a nonequilibrium steady-state maintained by a permanent throughput of energy. Specifically, we consider a "particle" as a bouncer whose oscillations are phase-locked with those of the energy-momentum reservoir of the zero-point field (ZPF), and we combine this with the random-walk model of the walker, again driven by the ZPF. Starting with this classical toy model of the bouncer-walker we were able to derive fundamental elements of quantum...
Source: http://arxiv.org/abs/1205.4519v1
2
2.0
Jun 30, 2018
06/18
by
Gerhard Groessing; Siegfried Fussy; Johannes Mesa Pascasio; Herbert Schwabl
texts
eye 2
favorite 0
comment 0
Combining high and low probability densities in intensity hybrids, we study some of their properties in double-slit setups. In particular, we connect to earlier results on beam attenuation techniques in neutron interferometry and study the effects of very small transmission factors, or very low counting rates, respectively, at one of the two slits. We use a "superclassical" modeling procedure which we have previously shown to produce predictions identical with those of standard...
Topic: Quantum Physics
Source: http://arxiv.org/abs/1406.1346
6
6.0
Jun 29, 2018
06/18
by
Johannes Mesa Pascasio; Siegfried Fussy; Herbert Schwabl; Gerhard Groessing
texts
eye 6
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We present our model of an Emergent Quantum Mechanics which can be characterized by "realism without pre-determination". This is illustrated by our analytic description and corresponding computer simulations of Bohmian-like "surreal" trajectories, which are obtained classically, i.e. without the use of any quantum mechanical tool such as wave functions. However, these trajectories do not necessarily represent ontological paths of particles but rather mappings of the...
Topic: Quantum Physics
Source: http://arxiv.org/abs/1602.04932
941
941
Dec 18, 2014
12/14
by
Voss, Gerhard Johannes, 1577-1649; Vossius, Isaac, 1618-1689
texts
eye 941
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Introduzione firmata: Isaacus Vossius
Topics: bub_upload, Lingua latina
Source: http://books.google.com/books?id=T1Dcp3jwSAQC&hl=&source=gbs_api
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72
Sep 21, 2013
09/13
by
Gerhard Groessing; Siegfried Fussy; Johannes Mesa Pascasio; Herbert Schwabl
texts
eye 72
favorite 0
comment 0
A classical explanation of interference effects in the double slit experiment is proposed. We claim that for every single "particle" a thermal context can be defined, which reflects its embedding within boundary conditions as given by the totality of arrangements in an experimental apparatus. To account for this context, we introduce a "path excitation field", which derives from the thermodynamics of the zero-point vacuum and which represents all possible paths a...
Source: http://arxiv.org/abs/1106.5994v3
3
3.0
Jun 30, 2018
06/18
by
Gerhard Groessing; Siegfried Fussy; Johannes Mesa Pascasio; Herbert Schwabl
texts
eye 3
favorite 0
comment 0
By introducing the concepts of "superclassicality" and "relational causality", it is shown here that the velocity field emerging from an n-slit system can be calculated as an average classical velocity field with suitable weightings per channel. No deviation from classical probability theory is necessary in order to arrive at the resulting probability distributions. In addition, we can directly show that when translating the thus obtained expression for said velocity field...
Topic: Quantum Physics
Source: http://arxiv.org/abs/1403.3295
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55
Jul 20, 2013
07/13
by
Johannes Mesa Pascasio; Siegfried Fussy; Herbert Schwabl; Gerhard Groessing
texts
eye 55
favorite 0
comment 0
Based on a re-formulation of the classical explanation of quantum mechanical Gaussian dispersion (Groessing et al. 2010) as well as interference of two Gaussians (Groessing et al. 2012), we present a new and more practical way of their simulation. The quantum mechanical "decay of the wave packet" can be described by anomalous sub-quantum diffusion with a specific diffusivity varying in time due to a particle's changing thermal environment. In a simulation of the double-slit experiment...
Source: http://arxiv.org/abs/1304.2885v1
41
41
Jul 19, 2013
07/13
by
Gerhard Groessing; Siegfried Fussy; Johannes Mesa Pascasio; Herbert Schwabl
texts
eye 41
favorite 0
comment 0
By modelling quantum systems as emerging from a (classical) sub-quantum thermodynamics, the quantum mechanical "decay of the wave packet" is shown to simply result from sub-quantum diffusion with a specific diffusion coefficient varying in time due to a particle's changing thermal environment. It is thereby proven that free quantum motion strictly equals ballistic diffusion. The exact quantum mechanical trajectory distributions and the velocity field of the Gaussian wave packet are...
Source: http://arxiv.org/abs/1005.1058v2
159
159
Sep 20, 2013
09/13
by
Johannes Mesa Pascasio; Siegfried Fussy; Herbert Schwabl; Gerhard Groessing
texts
eye 159
favorite 0
comment 0
Based on a proposed classical explanation, the quantum mechanical "decay of the wave packet" is shown to simply result from sub-quantum diffusion with a specific diffusivity varying in time due to a particle's changing thermal environment. The exact quantum mechanical intensity distribution, as well as the corresponding trajectory distribution and the velocity field of a Gaussian wave packet are therewith computed. We utilize no quantum mechanics, but only familiar simulation...
Source: http://arxiv.org/abs/1205.4521v1
2
2.0
Jun 30, 2018
06/18
by
Gerhard Groessing; Siegfried Fussy; Johannes Mesa Pascasio; Herbert Schwabl
texts
eye 2
favorite 0
comment 0
Elements of a "deeper level" explanation of the deBroglie-Bohm (dBB) version of quantum mechanics are presented. Our explanation is based on an analogy of quantum wave-particle duality with bouncing droplets in an oscillating medium, the latter being identified as the vacuum's zero-point field. A hydrodynamic analogy of a similar type has recently come under criticism by Richardson et al., because despite striking similarities at a phenomenological level the governing equations...
Topic: Quantum Physics
Source: http://arxiv.org/abs/1412.8349
4
4.0
Jun 26, 2018
06/18
by
Gerhard Groessing; Siegfried Fussy; Johannes Mesa Pascasio; Herbert Schwabl
texts
eye 4
favorite 0
comment 0
We show that during stochastic beam attenuation in double slit experiments, there appear unexpected new effects for transmission factors below $a\lesssim10^{-4}$, which can eventually be observed with the aid of weak measurement techniques. These are denoted as quantum sweeper effects, which are characterized by the bunching together of low counting rate particles within very narrow spatial domains. We employ a "superclassical" modeling procedure which we have previously shown to...
Topic: Quantum Physics
Source: http://arxiv.org/abs/1502.04034
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51
Sep 20, 2013
09/13
by
Gerhard Groessing; Siegfried Fussy; Johannes Mesa Pascasio; Herbert Schwabl
texts
eye 51
favorite 0
comment 0
Double slit interference is explained with the aid of what we call "21stcentury classical physics". We model a particle as an oscillator ("bouncer") in a thermal context, which is given by some assumed "zero-point" field of the vacuum. In this way, the quantum is understood as an emergent system, i.e., a steady-state system maintained by a constant throughput of (vacuum) energy. To account for the particle's thermal environment, we introduce a "path excitation...
Source: http://arxiv.org/abs/1205.3393v1
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102
Sep 22, 2013
09/13
by
Gerhard Groessing; Siegfried Fussy; Johannes Mesa Pascasio; Herbert Schwabl
texts
eye 102
favorite 0
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Based on our model of quantum systems as emerging from the coupled dynamics between oscillating "bouncers" and the space-filling zero-point field, a sub-quantum account of nonlocal correlations is given. This is explicitly done for the example of the "double two-slit" variant of two-particle interferometry. However, it is also shown that the entanglement in two-particle interferometry is only a natural consequence of the fact that already a "single" two-slit...
Source: http://arxiv.org/abs/1210.4406v1
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48
Sep 23, 2013
09/13
by
Gerhard Groessing; Siegfried Fussy; Johannes Mesa Pascasio; Herbert Schwabl
texts
eye 48
favorite 0
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In a new approach to explain double-slit interference "from the single particle perspective" via "systemic nonlocality", we answer the question of how a particle going through one slit can "know" about the state of the other slit. We show that this comes about by changed constraints on assumed classical sub-quantum currents, which we have recently employed to derive probability distributions and Bohm-type trajectories in standard double-slit interference on the...
Source: http://arxiv.org/abs/1303.2867v1
3
3.0
Jun 29, 2018
06/18
by
Gerhard Groessing; Siegfried Fussy; Johannes Mesa Pascasio; Herbert Schwabl
texts
eye 3
favorite 0
comment 0
We understand emergent quantum mechanics in the sense that quantum mechanics describes processes of physical emergence relating an assumed sub-quantum physics to macroscopic boundary conditions. The latter can be shown to entail top-down causation, in addition to usual bottom-up scenarios. With this example it is demonstrated that definitions of "realism" in the literature are simply too restrictive. A prevailing manner to define realism in quantum mechanics is in terms of...
Topic: Quantum Physics
Source: http://arxiv.org/abs/1603.02123
6
6.0
Jun 27, 2018
06/18
by
Johannes Hofmann; Dietmar Fey; Jan Eitzinger; Georg Hager; Gerhard Wellein
texts
eye 6
favorite 0
comment 0
We investigate the performance characteristics of a numerically enhanced scalar product (dot) kernel loop that uses the Kahan algorithm to compensate for numerical errors, and describe efficient SIMD-vectorized implementations on recent Intel processors. Using low-level instruction analysis and the execution-cache-memory (ECM) performance model we pinpoint the relevant performance bottlenecks for single-core and thread-parallel execution, and predict performance and saturation behavior. We show...
Topics: Performance, Computing Research Repository, Distributed, Parallel, and Cluster Computing
Source: http://arxiv.org/abs/1505.02586
5
5.0
Jun 28, 2018
06/18
by
Johannes Hofmann; Dietmar Fey; Jan Eitzinger; Georg Hager; Gerhard Wellein
texts
eye 5
favorite 0
comment 0
This paper presents an in-depth analysis of Intel's Haswell microarchitecture for streaming loop kernels. Among the new features examined is the dual-ring Uncore design, Cluster-on-Die mode, Uncore Frequency Scaling, core improvements as new and improved execution units, as well as improvements throughout the memory hierarchy. The Execution-Cache-Memory diagnostic performance model is used together with a generic set of microbenchmarks to quantify the efficiency of the microarchitecture. The...
Topics: Computing Research Repository, Distributed, Parallel, and Cluster Computing, Hardware Architecture
Source: http://arxiv.org/abs/1511.03639
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43
Sep 23, 2013
09/13
by
Johannes Habich; Christian Feichtinger; Harald Köstler; Georg Hager; Gerhard Wellein
texts
eye 43
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GPUs offer several times the floating point performance and memory bandwidth of current standard two socket CPU servers, e.g. NVIDIA C2070 vs. Intel Xeon Westmere X5650. The lattice Boltzmann method has been established as a flow solver in recent years and was one of the first flow solvers to be successfully ported and that performs well on GPUs. We demonstrate advanced optimization strategies for a D3Q19 lattice Boltzmann based incompressible flow solver for GPGPUs and CPUs based on NVIDIA...
Source: http://arxiv.org/abs/1112.0850v1
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17
Feb 15, 2020
02/20
by
Johannes Brahms; Marinette Extermann; Gerhard Kramer; Choeur De La Piaristenkirche
audio
eye 17
favorite 1
comment 0
Tracklist: 1. Prélude Et Fugue En La Mineur 2. Choralvorspiel & Fuge Über "O Traurigkeit, O Herzeleid" 3. Psaume 13 "Herr, Wie Lange Willst Du Mein So Gar Vergessen", Op. 27 Pour Triple Chœur De Femmes Et Orgue 4. Prélude Et Fugue En Sol Mineur 5. Les Quatre Derniers Préludes De Chorale, Op. 122: Er Ist Ein Ros' Entsprungen N°8 6. Les Quatre Derniers Préludes De Chorale, Op. 122: Herzlich Tut Mich Verlangen N°9 7. Les Quatre Derniers Préludes De Chorale, Op....
Topics: Classical, Romantic
Source: Vinyl LP
15
15
Dec 2, 2017
12/17
by
Johannes Wahl; Flemming Geil; Georg Tornqvist & 'Wiviex''s orkester; Gerhard Winckler
audio
eye 15
favorite 0
comment 0
2
2.0
Jun 29, 2018
06/18
by
Johannes Hofmann; Dietmar Fey; Michael Riedmann; Jan Eitzinger; Georg Hager; Gerhard Wellein
texts
eye 2
favorite 0
comment 0
We investigate the performance characteristics of a numerically enhanced scalar product (dot) kernel loop that uses the Kahan algorithm to compensate for numerical errors, and describe efficient SIMD-vectorized implementations on recent multi- and manycore processors. Using low-level instruction analysis and the execution-cache-memory (ECM) performance model we pinpoint the relevant performance bottlenecks for single-core and thread-parallel execution, and predict performance and saturation...
Topics: Distributed, Parallel, and Cluster Computing, Performance, Computing Research Repository
Source: http://arxiv.org/abs/1604.01890
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141
Jul 20, 2013
07/13
by
Christian Feichtinger; Johannes Habich; Harald Koestler; Georg Hager; Ulrich Ruede; Gerhard Wellein
texts
eye 141
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Sustaining a large fraction of single GPU performance in parallel computations is considered to be the major problem of GPU-based clusters. In this article, this topic is addressed in the context of a lattice Boltzmann flow solver that is integrated in the WaLBerla software framework. We propose a multi-GPU implementation using a block-structured MPI parallelization, suitable for load balancing and heterogeneous computations on CPUs and GPUs. The overhead required for multi-GPU simulations is...
Source: http://arxiv.org/abs/1007.1388v1
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36
Oct 24, 2014
10/14
by
Jansen, Nils; Ohlendorf, Birgit; Erhard, Arlette; Bruhn, Torsten; Bringmann, Gerhard; Imhoff, Johannes F.
texts
eye 36
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This article is from Marine Drugs , volume 11 . Abstract Microbial studies of the Mediterranean sponge Tethya aurantium led to the isolation of the fungus Bartalinia robillardoides strain LF550. The strain produced a number of secondary metabolites belonging to the chloroazaphilones. This is the first report on the isolation of chloroazaphilones of a fungal strain belonging to the genus Bartalinia. Besides some known compounds (helicusin A (1) and deacetylsclerotiorin (2)), three new...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3705371
Leif Druedahl 78rpm collection
0
0.0
Nov 25, 2020
11/20
by
Det syngende X (Johannes Wahl); Wandy Tworek og hans orkester; Gerhard Winkler; Sven Rye
data
eye 0
favorite 0
comment 0
42
42
Oct 22, 2014
10/14
by
Kunz, Anna Lena; Labes, Antje; Wiese, Jutta; Bruhn, Torsten; Bringmann, Gerhard; Imhoff, Johannes F.
texts
eye 42
favorite 0
comment 0
This article is from Marine Drugs , volume 12 . Abstract Eight streptophenazines (A–H) have been identified so far as products of Streptomyces strain HB202, which was isolated from the sponge Halichondria panicea from the Baltic Sea. The variation of bioactivities based on small structural changes initiated further studies on new derivatives. Three new streptophenazines (I–K) were identified after fermentation in the present study. In addition, revised molecular structures of...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4012441
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53
Oct 17, 2014
10/14
by
Mikula, Hannes; Weber, Julia; Svatunek, Dennis; Skrinjar, Philipp; Adam, Gerhard; Krska, Rudolf; Hametner, Christian; Frohlich, Johannes
texts
eye 53
favorite 1
comment 0
This article is from Beilstein Journal of Organic Chemistry , volume 10 . Abstract The development of a reliable procedure for the synthesis of the 16-glucoside and 16-sulfate of the resorcylic acid lactone (RAL) type compound zearalenone is presented. Different protective group strategies were considered and applied to enable the preparation of glucosides and sulfates that are difficult to access up to now. Acetyl and p-methoxybenzyl protection led to undesired results and were shown to be...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4077526
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13
Jun 28, 2018
06/18
by
Simon Murmann; Frank Deuretzbacher; Gerhard Zürn; Johannes Bjerlin; Stephanie M. Reimann; Luis Santos; Thomas Lompe; Selim Jochim
texts
eye 13
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comment 0
We report on the deterministic preparation of antiferromagnetic Heisenberg spin chains consisting of up to four fermionic atoms in a one-dimensional trap. These chains are stabilized by strong repulsive interactions between the two spin components without the need for an external periodic potential. We independently characterize the spin configuration of the chains by measuring the spin orientation of the outermost particle in the trap and by projecting the spatial wave function of one spin...
Topics: Quantum Gases, Condensed Matter
Source: http://arxiv.org/abs/1507.01117
30
30
Sep 23, 2013
09/13
by
Andreas Wild; Johannes Kierig; Jürgen Sailer; Joel Ager III; Eugene Haller; Gerhard Abstreiter; Stefan Ludwig; Dominique Bougeard
texts
eye 30
favorite 0
comment 0
We present a few electron double quantum dot (QD) device defined in an isotopically purified $^{28}$Si quantum well (QW). An electron mobility of $5.5 \cdot 10^4 cm^2(Vs)^{-1}$ is observed in the QW which is the highest mobility ever reported for a 2D electron system in $^{28}$Si. The residual concentration of $^{29}$Si nuclei in the $^{28}$Si QW is lower than $10^{3} ppm$, at the verge where the hyperfine interaction is theoretically no longer expected to dominantly limit the $T_{2}$ spin...
Source: http://arxiv.org/abs/1202.3237v2
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33
Oct 28, 2014
10/14
by
Van Schalkwyk, Marije; Andersson, Monique Ingrid; Zeier, Michele Desire; La Grange, Marina; Taljaard, Johannes Jakobus; Theron, Gerhard Barnard
texts
eye 33
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This article is from Journal of Acquired Immune Deficiency Syndromes (1999) , volume 63 . Abstract Background:: In April 2010, revised Prevention of Mother-to-Child Transmission guidelines were implemented in South Africa, advising fast-tracked lifelong highly active antiretroviral therapy (HAART) initiation at a higher CD4 count (≤350 cells per microliter). This study describes the impact of these changes on the management of pregnant women who initiated HAART at Tygerberg Hospital, Cape...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3707566
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52
Oct 1, 2014
10/14
by
Wogenstein, Karl L.; Szabo, Sandra; Lunova, Mariia; Wiche, Gerhard; Haybaeck, Johannes; Strnad, Pavel; Boor, Peter; Wagner, Martin; Fuchs, Peter
texts
eye 52
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This article is from PLoS ONE , volume 9 . Abstract Epiplakin, a member of the plakin protein family, is exclusively expressed in epithelial tissues and was shown to bind to keratins. Epiplakin-deficient (EPPK−/−) mice showed no obvious spontaneous phenotype, however, EPPK−/− keratinocytes displayed faster keratin network breakdown in response to stress. The role of epiplakin in pancreas, a tissue with abundant keratin expression, was not yet known. We analyzed epiplakin’s expression...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4169488
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Dec 13, 2019
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Ernst-Gerhard Burmeister; Walter E W Ruckdeschel; Johannes Voith; Der Präsident Der Münchner Entomologischen Gesellschaft E. V.; Max Kühbandner
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